Since bathrooms are places where people go in order to refresh themselves after hard-working day, it is normal that they want bathrooms to look nice, clean and trendy. Toilet designs have become popular lately because bathrooms are slowly but safely becoming a focal point of lots of designers.
Prior to making any purchase, you need to do brainstorming. Just write down few things that should characterize your bathroom toilets. It doesn't have to be anything fancy, but it should give you some general guidelines so you know at least what type of bathroom toilet you want.

You need to take into consideration various things while choosing the best bathroom toilet. For example: space, bathroom utilities, accessories, furniture, electrical installations, air ventilation, maintenance... There is more things, but these are just to give you general idea. So as you can see, choosing your own unique bathroom toilet is rather hard and tedious task - it's not just choosing color and design.
You can increase the space by using specially designed furniture that doesn't take up too much space and is functional as well. That would drawer units, sink vanity units, cabinets etc. All those things that can be mounted on the wall.
Also, while you are making any purchases, you should bear in mind that everything should be compatible in order to avoid cluttered look. You should match toilet fittings with bathroom fittings. Mirrors placement should also be taken care of. Usually, mirror should be placed in a position where it can reflect as much light as possible.

Bathroom materials are another important point. I won't go deep into it. However, I'll list few characteristics of modern bathroom materials: water resistance, chemical resistance, durability, good surface soundness... For material suggestions check out internet websites.
And in the end, if you are buying bathroom toilets, you should understand that that is not an easy task so if you got any problems, try to contact professionals - they will definitely do their job correctly.